public interface ChainItem
An instance of chain element may only be added to one data item
WriteAttributeResults setAttributes(Map<String,Variant> attributes)
attributes
- the attributes update setVariant process(Variant value, Map<String,Variant> attributes)
value
- the value to process or null
if a output item
changed only the attributesattributes
- The current primary attributesnull
if the chain item does not
change the input value